ROCKMAN wrote:What has the greater influence on oil prices: the capability of the global economy to purchase oil or the production CAPACITY of the oil producers?
Both play together, this is basic demand/supply in a free market (capacity not artificially capped to adjust demand). When the price was increasing in the beginning of the 2000's, was it because of the healthy global economy leaded by China hungry for oil? Or was it from the depressed economy of the end of the 90's which did not gave enough incentives to increase oil production capacity? Probably both, but they don't play on the same time scale.
We increased (and still do) the production capacity after that. Thanks to the policies brought to heal the global economy which helped it to put $trillions in the oil sector (also, capacity was capped again). But when consumption growth waded, we returned quickly in the 1986-1999 situation of an oil glut.
So, sure, it's the global economy that set production capacity and consumption capacity. But production has some physical constrains that makes it more and more difficult to expand (i.e. need more money). At some point, the global economy won't be able to increase both consumption and capacity. We may call it peak oil or peak demand, but it's the two faces of the same coin.